APA (7th ed.) Citation

O'Brien Karel, Nasef Nehad, Wylie Lesley, & Unger Sharon. (2010). Lessons from SARS: A retrospective study of outpatient care during an infectious disease outbreak. BMC.

Chicago Style (17th ed.) Citation

O'Brien Karel, Nasef Nehad, Wylie Lesley, and Unger Sharon. Lessons from SARS: A Retrospective Study of Outpatient Care During an Infectious Disease Outbreak. BMC, 2010.

MLA (9th ed.) Citation

O'Brien Karel, et al. Lessons from SARS: A Retrospective Study of Outpatient Care During an Infectious Disease Outbreak. BMC, 2010.

Warning: These citations may not always be 100% accurate.